Impacts and Factors of Dissemination of High Temperature-Tolerant Rice in Japan

2021 Fiscal Year Final Research Report

• Project/Area Number: 16K07907
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Agricultural science in management and economy
• Research Institution: Nihon University (2018-2021); Reitaku University (2016-2017)
• Principal Investigator: AKUNE Yuko 日本大学, 生物資源科学部, 准教授 (90363952)
• Project Period (FY): 2016-04-01 – 2022-03-31
• Keywords: 気候変動 / 高温耐性品種米 / 研究開発(R&D) / 生産性

Outline of Final Research Achievements

This research found the following three points. Firstly, the dissemination of high temperature-tolerant rice increased first-grade rice; the development of new cultivar in each prefecture and a trend of decline in the first-grade rice ratio stimulated the dissemination. Secondly, a dynamic computable general equilibrium model simulation showed that the dissemination improved economic welfare. Meanwhile, the negative impact on the equivalent variation of non-farm households remained. Finally, farmers’ productivity distribution demonstrated the heterogeneity in their potential to accept new technologies and novel cultivars. Moreover, farmers’ attributes, rich communication in a community, and proximity to research and development institutions stimulated productivity to improve.

Free Research Field

農業経済学、フードシステム

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的意義は、高温耐性品種米の普及状況とともに、その要因や一等米比率向上への寄与を明らかにしたこと、さらに、新技術・新品種導入に伴う追加的な固定費用の負担に対する農家の受容ポテンシャルの度合いが一様ではないことを示した点である。また、気候変動への適応策が生産者だけでなく、社会全体に寄与しうることを示したことに社会的意義がある。